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very uneven power divider

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Mabrok

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Hi, I am required to use very uneven power divider in my power amplifier design. Is very thin width of the transmission line is realizable practically (w=0.05 mm)? Attached is the layout of power divider designed Layout of uneven power divider.jpg
 

What is the coupling ratio? Maybe it's easier to just use a resistive divider in parallel to the main line, if the coupling is that small. The resulting mismatch is small then.
 

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